The company's Web site addresses the issue in its FAQ section with the question "When giving an animal Greenies, does it affect their digestive system?" The answer "The only time dogs would be unable to digest anything would be if they didn't chew it up before they swallowed it. Canine and Feline Greenies are highly digestible when chewed."

They don't know that dogs do tend to gulp things down? I think a food product made and sold specifically for dogs should be safe even if swallowed without being chewed.